苏州混凝土水泥制品研究院有限公司

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发布时间:2020-01-06 00:00:00
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杂志简介

主办单位: 苏州混凝土水泥制品研究院
中国混凝土与水泥制品协会
  • 主编 : 李建华
  • 常务副主编 : 王春蓉
  • 刊期 : 月刊
  • 电话 : 0512-68285716
  • E-mail : sccpitg@126.com
  • 国内统一刊号(CN) : 32-1173/TU
  • 国际标准刊号(ISSN) : 1000-4637
  • 邮发代号 : 28-80
hunnitu 微信公众号
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混凝土研究

外加剂对沙漠砂混凝土3D打印性能的影响
外加剂对沙漠砂混凝土3D打印性能的影响
  • 张耀宇1,王文明1,2,蔡炎皓1,李 露3,孟 军1
2022年第9期
摘要
引用本文
张耀宇,王文明,蔡炎皓,等.外加剂对沙漠砂混凝土3D打印性能的影响[J].混凝土与水泥制品,2022(9):1-6. ZHANG Y Y,WANG W M,CAI Y H,et al.Effect of Admixture on 3D Printing Performance of Desert Sand Concrete[J].China Concrete and Cement Products,2022(9):1-6.
石膏产品用新型高性能聚羧酸减水剂的制备与性能研究
石膏产品用新型高性能聚羧酸减水剂的制备与性能研究
  • 逄鲁峰1,孙立刚1,陈炳江1,赵雅萌1,贾广贺1,王 恒2
2022年第9期
摘要
引用本文
摘   要:采用异戊烯醇聚氧乙烯醚(TPEG)作为减水剂合成大单体,通过引发剂进行聚合反应合成石膏基材用新型高性能聚羧酸减水剂母液,将合成的减水剂母液通过离心喷雾干燥技术制备成粉末(PC-GY)。设计正交试验研究了链转移剂用量、酸醚摩尔比、还原剂摩尔比、引发剂用量对石膏净浆流动度的影响,并确定了最优配合比。通过单因素变量试验研究了不同种类聚醚单体、中和固碱量对减水剂减水性能的影响,并通过红外光谱(IR)分析了聚羧酸分子结构。结果表明:合成的PC-GY性能较优,在不同种类石膏中均表现出良好的适应性,并成功应用于石膏基自流平砂浆。 Abstract: Isoprene polyoxyethylene ether(TPEG) was used as a synthesize macromonomers of water reducer, and the polymerization reaction was occured through the action of an initiator to synthesize the mother liquor of a new high performance polycarboxylate water reducer for gypsum substrates, and the powder(PC-GY) was prepared with synthesized water reducer mother liquor by centrifugal spray drying technique. Orthogonal experiments were designed to study the effects of chain transfer agent dosage, acid ether molar ratio, reducing agent molar ratio and initiator dosage on the fluidity of gypsum slurry, and the optimal mixing ratio was determined. The effects of different kinds of polyether monomers and the amount of neutralized solid base on the properties of the superplasticizer were studied by single factor variable tests, and the molecular structure of polycarboxylate was analyzed by infrared spectroscopy(IR). The results show that the synthesized PC-GY has better performance and shows good adaptability in different kinds of gypsum. PC-GY is successfully applied to prepare gypsum based self-leveling mortar.
逄鲁峰,孙立刚,陈炳江,等.石膏产品用新型高性能聚羧酸减水剂的制备与性能研究[J].混凝土与水泥制品,2022(9):7 -11,28. PANG L F,SUN L G,CHEN B J,et al.Preparation and Properties of a New Type of High Performance Polycarboxylate Superplasticizer for Gypsum Products[J].China Concrete and Cement Products,2022(9):7 -11,28.
环氧基结构胶对开裂混凝土抗压强度修复性能研究
环氧基结构胶对开裂混凝土抗压强度修复性能研究
  • 汪 雷1,3,卫成凤2,杜健民2,常 虹2,谭仪忠1,4
2022年第9期
摘要
引用本文
摘   要:通过改变环氧基结构胶A、B组分之间的比例及混凝土受压试件的裂缝宽度,研究了不同A、B组分比例与裂缝宽度对开裂混凝土试件抗压强度修复性能的影响。结果表明:环氧基结构胶A、B组分的最优质量比为A∶B=3∶1,此时环氧基结构胶对开裂混凝土的抗压强度的修复效果最好;裂缝宽度基本不影响环氧基结构胶对开裂混凝土抗压强度的修复效果;通过ABAQUS数值建模分析得到修复后混凝土试件内部的应力分布与实际抗压强度一致,说明环氧基结构胶可以对开裂混凝土进行有效修复、补强。 Abstract: By changing the ratio between components A and B of epoxy-based structural adhesives and the crack width of concrete compressive specimens, the effects of the different proportions of components A and B and the width of cracks on the compressive strength repair performance of cracked concrete specimens were studied. The results show that the optimal mass ratio of components A and B of epoxy-based structural adhesive is A∶B=3∶1, at this time, epoxy-based structural adhesive has the best repair effect on the compressive strength of cracked concrete. The crack width basically does not affect the repair effect of epoxy-based structural adhesive on the compressive strength of cracked concrete. Through the ABAQUS numerical analysis, the stress distribution inside the concrete specimens after repair is consistent with the actual compressive strength, indicating that the epoxy-based structural adhesive can effectively repair and strengthen cracked concrete.
汪雷,卫成凤,杜健民,等.环氧基结构胶对开裂混凝土抗压强度修复性能研究[J].混凝土与水泥制品,2022(9):12-15. WANG L,WEI C F,DU J M,et al.Research on the Repair Performance of Epoxy-based Structural Adhesive on the Compressive Strength of Cracked Concrete[J].China Concrete and Cement Products,2022(9):12-15.
石墨烯-羧基化碳纳米管水泥基复合材料力学性能研究
石墨烯-羧基化碳纳米管水泥基复合材料力学性能研究
  • 王小凡1,2,朱 华2
2022年第9期
摘要
引用本文
摘   要:研究了不同质量比的石墨烯-羧基化碳纳米管对水泥基复合材料力学性能的影响。试验结果表明:掺入石墨烯(G)、羧基化碳纳米管(CNT)后,试件的抗压、抗折强度均出现了明显的提高;相较于单掺G和CNT,复掺0.05%的G和0.10%的CNT(G5C10)时,试件的抗压、抗折强度提高效果更显著,28 d的抗压、抗折强度达62.91 MPa和8.52 MPa,相较于对比组分别提高了37.5%和25.8%。MIP和SEM结果表明,G5C10为最佳掺入比例,此时试件的有害孔大幅减少,在微孔隙裂缝等薄弱区域形成致密化结构。 Abstract: The effects of different mass ratio of graphene-carboxylated carbon nanotubes on the mechanical properties of cement-based composites were studied. The test results show that the compressive strength and flexural strength of specimen increase obviously with the addition of graphene(G) carboxylated carbon nanotubes(CNT) composites. Compared with the specimen incorporated G or CNT, adding 0.10% CNT and 0.05% G is beneficial to improve its mechanical properties significantly, 28 d compressive strength and flexural strength reaching 62.91 MPa and 8.52 MPa, increasing by 37.5% and 25.8% compared with the control group. The MIP and SEM results show that G5C10 group is the best ratio, at this time, the harmful pores of cement mortar are greatly reduced, and then a densification structure in the weak areas such as micro-pores and cracks can be formed.
王小凡,朱华.石墨烯-羧基化碳纳米管水泥基复合材料力学性能研究[J].混凝土与水泥制品,2022(9):16-19. WANG X F,ZHU H.Mechanical Properties of Graphene-carboxylated Carbon Nanotubes Cement-based Composites[J].China Concrete and Cement Products,2022(9):16-19.
基于机器学习算法的混凝土28 d抗压强度预测
基于机器学习算法的混凝土28 d抗压强度预测
  • 刘德胜
2022年第9期
摘要
引用本文
摘   要:为较准确预测混凝土28 d的抗压强度,以水泥、粉煤灰、砂、碎石和水5种原材料的单位用量作为输入,混凝土28 d抗压强度作为输出,构建了一个拥有249组样本的数据库。运用决策树、支持向量机、高斯过程回归、集成学习、神经网络5种机器学习算法进行超参数优化,构建了混凝土28 d抗压强度预测模型,并对其精度进行了评估。对比5种机器学习算法结果可知:高斯过程回归模型是预测混凝土28 d抗压强度的最优预测模型;基于构建的高斯过程回归模型对无岳高速WYTJ-07标段隧道工程自制的5种花岗岩混凝土28 d抗压强度进行了预测,预测值的最大相对误差为8.95%,证明该模型预测精度良好,可靠性高。 Abstract: In order to accurately predict the 28 d compressive strength of concrete, a database with 249 groups of samples was constructed with the unit dosage of cement, fly ash, sand, gravel and water as the input and the 28 d compressive strength of concrete as the output. 5 machine learning algorithms, namely decision tree, support vector machine, Gaussian process regression, ensemble learning and neural network were used to optimize the parameters. The prediction models of 28 d compressive strength of concrete were constructed and their accuracies were evaluated. Comparing the results of the 5 machine learning algorithms show that the Gaussian process regression model is the optimal model for predicting 28 d compressive strength of concrete. Based on the constructed Gaussian process regression model, the 28 d compressive strength of five kinds of granite concrete prepared by the project department of WYTJ-07 section of Wuyue Expressway tunnel project is predicted. The maximum relative error between the predicted and actual values is 8.95 %, proving that the constructed model has good prediction accuracy and high reliability.
刘德胜.基于机器学习算法的混凝土28 d抗压强度预测[J].混凝土与水泥制品,2022(9):20-24. LIU D S.The Prediction of 28 d Compressive Strength of Concrete Based on Machine Learning Algorithms[J].China Concrete and Cement Products,2022(9):20-24.
纳米SiO2的分散性和掺量对混凝土性能的影响
纳米SiO2的分散性和掺量对混凝土性能的影响
  • 陈际洲1,2,乔晓立3,唐兴滨3,赵铁军1,王鹏刚1,乔 允4,陈 强3,谭 哲5
2022年第9期
摘要
引用本文
摘   要:研究了凝胶型和颗粒型纳米SiO2的分散性和掺量对混凝土的抗压强度、抗碳化性能和抗氯离子渗透性能的影响。结果表明:同条件下,凝胶型比颗粒型纳米SiO2的分散性好;经过超声处理的比未超声处理的纳米SiO2的分散性要好,可以有效改善混凝土的后期抗压强度、抗碳化性能和抗氯离子渗透性能;在一定范围内,纳米SiO2的掺量越大,对混凝土的性能改善效果越明显。 Abstract: The effects of the dispersibility and dosage of gel-type and particle-type nano-SiO2 on the compressive strength, carbonation resistance and chloride ion penetration resistance of concrete were studied. The results show that under the same conditions, the dispersibility of the gel-type nano-SiO2 is better than that of the particle-type nano-SiO2. The dispersibility of the nano-SiO2 dispersed by ultrasonic is better than that of the non-ultrasonic dispersed nano-SiO2, which can effectively improve the later compressive strength, anti-carbonization performance and the resistance to chloride ion penetration of concrete. within a certain range, the larger the content of nano-SiO2, the more obvious the effect of improving the performance of concrete.
陈际洲,乔晓立,唐兴滨,等.纳米SiO2的分散性和掺量对混凝土性能的影响[J].混凝土与水泥制品,2022(9):25-28. CHEN J Z,QIAO X L,TANG X B,et al.Influence of Dispersibility and Content of Nano-SiO2 on Concrete Properties[J].China Concrete and Cement Products,2022(9):25-28.
钙镁复合型多源体系膨胀剂的制备及其在混凝土中的应用
钙镁复合型多源体系膨胀剂的制备及其在混凝土中的应用
  • 王海龙1,贺 念1,程福星2,邓小旭2,纪宪坤1
2022年第9期
摘要
引用本文
摘   要:利用白云石为主要矿源采用不同的煅烧制度和配合比制备了双膨胀源和三膨胀源膨胀剂,并研究了其水化放热速率和限制膨胀率,探讨了该钙镁复合型多源体系膨胀剂对混凝土力学性能的影响。结果表明:随着煅烧温度的升高,双膨胀源膨胀剂的水化放热速率和温峰先升高后降低,温峰值分别为80.5、82.2、61.8、31.6 ℃,且到达温峰的时间也随之变化;相同膨胀剂掺量下,双膨胀源膨胀剂的膨胀率随着煅烧温度的升高而降低,950 ℃时膨胀率最优;养护温度越高,膨胀反应速率越快,膨胀性能发挥越充分,60 ℃养护时,膨胀主要发生在混凝土前14 d,后期变化不大;三膨胀源膨胀剂对混凝土前28 d的抗压强度有一定贡献,但60 d时较对照组有一定降低。 Abstract:  The dual-expansion source and triple expansion source expansion agents by Using dolomite as the main mineral source at the different calcination systems and material ratios were prepared. Based on the analysis of its mineral composition, the hydration heat release rate and the limiting expansion rate of the expansion agent were determined. The influence of the calcium-magnesium composite multi-source system expansion agent on the mechanical properties of concrete was also discussed. The results show that with the increase of the calcination temperature, the hydration heat release rate and the temperature peak of the dual-expansion source expansion agent increase and then decrease. The temperature peaks are 80.5 ℃, 82.2 ℃, 61.8 ℃ and 31.6 ℃ respectively, and the time to reach the temperature peak also changes accordingly. At the same content, the expansion rate of dual-expansion source expansion agent gradually decreases with the increase of the calcination temperature, and the calcination temperature at 950 ℃ is the best. The higher curing temperature, the faster expansion reaction rate. When the curing temperature is 60 ℃, the expansion of concrete mainly occurs before the 14 d age, and there is little change at late age. The triple-expansion source expansion agent has has a certain contribution to the compressive strength of concrete before 28 d, but at 60 d, it is lower than that of control group.
王海龙,贺念,程福星,等.钙镁复合型多源体系膨胀剂的制备及其在混凝土中的应用[J].混凝土与水泥制品,2022(9):29-32,37. WANG H L,HE N,CHENG F X,et al.Preparation of Calcium-magnesium Composite Multi-source System Expansion Agent and Its Application in Concrete[J].China Concrete and Cement Products,2022(9):29-32,37.
混凝土细观试验方法及力学理论研究综述
混凝土细观试验方法及力学理论研究综述
  • 胡力绳1,曹 浪2,王红强2,杨 琴2,贾 超2,朱珂正3
2022年第9期
摘要
引用本文
摘   要:介绍了当前常用于混凝土研究的细观试验方法和细观力学理论,并对各方法进行了总结和评价;根据目前的研究现状和局限性,提出了新的研究方向,对未来的研究发展趋势进行了展望。 Abstract: The mesoscopic test methods and mechanics theory commonly used in concrete research are introduced and evaluated. According to the current research status and limitations, new research directions are put forward. The future research development trend is prospected.
胡力绳,曹浪,王红强,等.混凝土细观试验方法及力学理论研究综述[J].混凝土与水泥制品,2022(9):33-37. HU L S,CAO L,WANG H Q,et al.Research Review of Concrete Mesoscopic Test Methods and Mechanics Theory[J].China Concrete and Cement Products,2022(9):33-37.

水泥混凝土制品

带底座单层配筋钢筋混凝土椭圆管的设计和结构计算
带底座单层配筋钢筋混凝土椭圆管的设计和结构计算
  • 曹生龙
2022年第9期
摘要
引用本文
摘   要:考虑管顶、管底和管腹受力特点,介绍了带底座单层配筋混凝土椭圆管的结构设计方法,并结合具体示例,阐述了配筋计算和裂缝宽度验算过程,针对不用规格带底座单层配筋混凝土椭圆管,给出了相关配筋表,以期为带底座单层配筋混凝土椭圆管的推广和使用提供参考。 Abstract: Considering the stress characteristics of pipe top, pipe bottom and pipe body, the design and structural calculation method of based sharped single-layer reinforced elliptical concrete pipes were introduced, and combined with specific calculation example, the process of reinforcement calculation and crack width checking calculation were expoundes. The relevant reinforcement table for  based sharped single-layer reinforced elliptical concrete pipes with different specifications was given, which can provide a reference for the promotion and use of based sharped single-layer reinforced elliptical concrete pipes.
曹生龙.带底座单层配筋钢筋混凝土椭圆管的设计和结构计算[J].混凝土与水泥制品,2022(9):38-41. CAO S L.Design and Structure Calculation of Based Sharped Single-layer Reinforced Elliptical Concrete Pipes[J].China Concrete and Cement Products,2022(9):38-41.
预制混凝土衬砌板在隧道修补加固工程中的应用
预制混凝土衬砌板在隧道修补加固工程中的应用
  • 陈秀平1,章彬虎1,郑国平2,毛江才3,林海洋4
2022年第9期
摘要
引用本文
摘  要:为了解决公路山岭隧道二次衬砌结构厚度不足、开裂等病害导致的承载力不足问题,并减少现浇套拱加固方法造价较高、封闭交通时间较长的缺陷,介绍了预制混凝土衬砌板(PCL板)在隧道修补加固中的应用,包括其结构构造、设计流程与施工流程,可为今后国内隧道衬砌病害处理提供参考。 Abstract: In order to solve the problem of insufficient bearing capacity caused by diseases such as insufficient thickness and cracking of secondary lining structure of road rock tunnel, and to reduce the defects of high cost and long closed traffic time of cast-in-place arch reinforcement method, the precast concrete lining(PCL) plates was introduced, including its overall structure, design and construction process, which can provide reference for the treatment of tunnel lining diseases in the future.
陈秀平,章彬虎,郑国平,等.预制混凝土衬砌板在隧道修补加固工程中的应用[J].混凝土与水泥制品,2022(9):42-45. CHEN X P,ZHANG B H,ZHENG G P,et al.Application of PCL Plates in Tunnel Repairing and Reinforcement Engineering[J].China Concrete and Cement Products,2022(9):42-45.
预应力混凝土空心支护桩接桩处焊缝强度计算及有限元分析
预应力混凝土空心支护桩接桩处焊缝强度计算及有限元分析
  • 马思彬,何 振,冼景成,邱振贵
2022年第1期
摘要
引用本文
马思彬,何振,冼景成,等.预应力混凝土空心支护桩接桩处焊缝强度计算及有限元分析[J].混凝土与水泥制品,2022(9):46-49. MA S B,HE Z,XIAN J C,et al.Strength Calculation and Finite Element Analysis on Welded Joint of Prestressed Concrete Hollow Supporting Piles[J].China Concrete and Cement Products,2022(9):46-49.

纤维水泥及制品

硅灰对超高性能混凝土性能提升机理试验研究
硅灰对超高性能混凝土性能提升机理试验研究
  • 樊俊江
2022年第9期
摘要
引用本文
摘   要:研究了不同硅灰掺量对超高性能混凝土(UHPC)拌合物性能、力学性能的影响,并通过水化程度、孔结构、界面黏结强度等微观测试方法探讨了硅灰对UHPC性能的提升机理。结果表明,掺入硅灰可从微观和细观层面促进水泥水化、优化孔结构、提升钢纤维与浆体的黏结性能,从而提升UHPC的力学性能。当硅灰掺量在20%范围内时,提升效果随着硅灰掺量的增加而增大;当硅灰掺量超过20%时,硅灰的高需水量特性开始显现,使得UHPC拌合物的黏度大幅增加,不利于浇筑成型和气泡排出,使UHPC内部缺陷增多导致其抗压强度下降;硅灰在UHPC中的推荐掺量为10%~20%。 Abstract: The effects of different silica fume content on the mixture properties and mechanical properties of ultra-high performance concrete(UHPC) were studied, and the improvement mechanism of silica fume on the properties of UHPC was analyzed by micro-testing methods such as hydration degree, pore structure and interfacial bond strength. The results show that the addition of silica fume can promote the hydration of cement in UHPC, optimize the pore structure, and improve the bonding performance between steel fiber and slurry, so as to improve the mechanical properties of UHPC. The improvement effect increases with the increase of silica fume content in the range of 20%. When the silica fume content is over 20%, the characteristics of high water demand of silica fume begins to appear. The viscosity of UHPC mixture increases greatly, which is not conducive to pouring molding and pore discharge. The increase of internal defects leads to the decrease of compressive strength. The recommended content of silica fume in UHPC is 10%~20%.    
樊俊江.硅灰对超高性能混凝土性能提升机理试验研究樊俊江[J].混凝土与水泥制品,2022(9):50-53,61. FAN J J.Experimental Study on Performance Improvement Mechanism of Silica Fume on Ultra-high Performance Concrete(UHPC)[J].China Concrete and Cement Products,2022(9):50-53,61.
纤维增强硅粉高性能混凝土试验研究
纤维增强硅粉高性能混凝土试验研究
  • 杨艳春1,张海红2,梁兴荣2
2022年第9期
摘要
引用本文
摘   要:研究了粉煤灰掺量(15%、20%、25%)、硅粉掺量(0、2%、4%、6%、8%)和钢纤维掺量(0、0.5%、1.0%、1.5%、2.0%)对混凝土工作性、力学性能和断裂性能的影响。结果表明:粉煤灰掺量越大,混凝土的工作性越好,力学性能先提升后降低,适宜掺量为20%;随着硅粉掺量的增加,混凝土的力学性能先提升后降低,当硅粉掺量为4%时,混凝土的抗压强度最高;钢纤维的掺入使新拌混凝土的工作性降低,但能有效延缓混凝土的受压破坏进程,提高混凝土的弯曲韧性,当钢纤维掺量为1.5%时,混凝土的断裂荷载达到最大。 Abstract: The effects of fly ash content(15%, 20%, 25%), silicon powder content(0、2%、4%、6%、8%) and steel fiber content(0, 0.5%, 1.0%, 1.5%, 2.0%) on the workability, mechanical properties and fracture properties of concrete were studied. The results show that the higher the content of fly ash, the better the workability of concrete, the mechanical properties first increase and then decrease, and the appropriate content is 20%. With the increase of silicon powder content, the mechanical properties of concrete increase first and then decrease, and when the silicon powder content is 4%, the compressive strength of concrete is the highest. The addition of steel fiber reduces the workability of fresh concrete, but it can effectively delay the compression failure process of concrete and improve the bending toughness of concrete. When the content of steel fiber is 1.5%, the fracture load of concrete reaches the maximum.
杨艳春,张海红,梁兴荣.纤维增强硅粉高性能混凝土试验研究[J].混凝土与水泥制品,2022(9):54-57,61. YANG Y C,ZHANG H H,LIANG X R.Experimental Study on Fiber Reinforced High Performance Concrete with Silicon Powder[J].China Concrete and Cement Products,2022(9):54-57,61.
引气沙漠砂纤维混凝土力学性能研究
引气沙漠砂纤维混凝土力学性能研究
  • 吕胜辉1,沙吾列提·拜开依1,2,徐俊辉3
2022年第9期
摘要
引用本文
摘   要:通过正交试验研究了引气剂(十二烷基磺酸钠)、短切玄武岩纤维(BF)和沙漠砂对混凝土抗压强度、劈裂抗拉强度和抗折强度的影响。结果表明,引气沙漠砂纤维混凝土的最优配合比为引气剂掺量0.003%、沙漠砂替代率40%、短切BF掺量0.1%。 Abstract: The effects of air entraining agent (sodium dodecyl sulfonate), chopped basalt fiber (BF) and desert sand on the compressive strength, splitting tensile strength and flexural strength of concrete were studied by orthogonal tests. The results show that the optimal mix proportion of air entraining fiber reinforced concrete with desert sand is as follows: the air entraining agent content is 0.003%, the replacement rate of desert sand is 40%, and the chopped BF content is 0.1%.
吕胜辉,沙吾列提·拜开依,徐俊辉.引气沙漠砂纤维混凝土力学性能研究[J].混凝土与水泥制品,2022(9):58-61. LYU S H,BEKEY·S,XU J H.Study on Mechanical Properties of Air Entraining Fiber Reinforced Concrete with Desert Sand[J].China Concrete and Cement Products,2022(9):58-61.

房建材料及制品

层状结构轻质隔热水泥基材料的吸波性能
层状结构轻质隔热水泥基材料的吸波性能
  • 解 帅1,贾治勇2,曹延鑫1,冀志江1,司甜甜1,王 静1
2022年第9期
摘要
引用本文
摘   要:以纳米炭黑和膨胀珍珠岩为吸波剂和轻骨料,设计制备了层状结构轻质水泥基复合材料,采用弓形反射法研究其对X波段的微波吸收性能,并对其导热系数进行了测试。结果表明:与传统的阻抗渐变多层结构相比,所制备的层状结构水泥基材料具有更好的微波吸收性能,对X波段的电磁波反射率小于-15 dB;所制备的层状结构轻质水泥基复合材料具有显著的保温隔热功效。 Abstract: Layered structured lightweight cement-based composite was designed and fabricated using carbon black and expanded perlite as electromagnetic wave absorbent and lightweight aggregates. The electromagnetic wave absorption properties were studied by arching reflected method, and the thermal conductivity coefficient was tested. The results indicate that the prepared layered structured cement-based composites exhibit better electromagnetic wave absorption properties than the traditional gradient multi-layer structured cement-based composites. The reflectivity of layered structured cement-based composites can be less than -15 dB in the whole X-band. The prepared layered structured lightweight cement-based composites possess remarkable thermal insulation function.
解帅,贾治勇,曹延鑫,等.层状结构轻质隔热水泥基材料的吸波性能[J].混凝土与水泥制品,2022(9):62-65. XIE S,JIA Z Y,CAO Y X,et al.Electromagnetic Wave Absorbing Properties of Layered Structured Thermal Insulation Lightweight Cement-based Materials[J].China Concrete and Cement Products,2022(9):62-65.
高强灌浆材料的制备及性能研究
高强灌浆材料的制备及性能研究
  • 王 恒1,王 朝1,李 伟1,张 斌1,姜 斌1,尹海军1,虎长军1,李 宁1,何苏元1,包金瑛1,明 阳2
2022年第9期
摘要
引用本文
摘   要:采用三级配河砂设计优化了高强灌浆材料的配合比,研究了水胶比、胶砂比和不同材料组成对灌浆材料工作性和力学性能的影响,分析了钙矾石型复合膨胀剂和塑性膨胀剂对灌浆材料收缩性能的影响。结果表明:当水胶比为0.20、胶砂比为1.0、硅灰掺量为10%、降黏剂掺量为10%、减水剂掺量为1.0%、钙矾石型复合膨胀剂掺量为10%、塑性膨胀剂掺量为0.01%、钢纤维体积掺量为1.5%时,可制备出性能优异的高强灌浆材料,有效缓解灌浆材料的收缩问题。 Abstract: The mix proportion of high strength grouting material was designed by using three-grade sand design method. The effects of water-binder ratio, binder-sand ratio and different material compositions on the workability and mechanical properties of grouting material were studied, and the effects of ettringite-type composite expansion agent and plastic expansion agent on the shrinkage properties of grouting material were analyzed. The results show that when the water-binder ratio is 0.20, the binder-sand ratio is 1.0, the silica fume content is 10%, the viscosity reducer content is 10%, the water reducing agent content is 1.0%, the ettringite-type composite expansion agent content is 10%, the plastic expansion agent content is 0.01%, and the volume content of steel fiber is 1.5%, the high strength grouting material with excellent performance can be prepared, which can effectively alleviate the shrinkage problem of the grouting material.
王恒,王朝,李伟,等.高强灌浆材料的制备及性能研究[J].混凝土与水泥制品,2022(9):66-69. WANG H,WANG C,LI W,et al.Study on the Preparation and Performance of High Strength Grouting Materials[J].China Concrete and Cement Products,2022(9):66-69.
陶粒混凝土超长内隔墙条板的受力性能研究
陶粒混凝土超长内隔墙条板的受力性能研究
  • 邹新兴,王昌远,王安涟,嵇佳龙,刘 雁
2022年第9期
摘要
引用本文
摘   要:为了解决小宽度预制装配陶粒混凝土墙板的开裂问题,研制了高3 500 mm、长5 000 mm、厚200 mm的超长陶粒混凝土墙板,对该墙板进行了抗弯、抗冲击和吊挂力试验,分析了墙板在均布荷载下的受弯荷载-应变(挠度)曲线、破坏现象以及抗冲击和吊挂试验现象。结果表明:墙板的抗弯性能、抗冲击性能和吊挂性能均达到相关规范要求;依据现有混凝土受弯理论计算得到的墙板受弯承载力和挠度与试验值吻合良好;推导出的墙板最大冲击力远小于其冲击承载力,与试验现象相符。 Abstract: In order to solve the cracking problem of small width precast ceramsite concrete partition slab, the super-long ceramsite concrete partition slab with the height of 3 500 mm, the length of 5 000 mm and the thickness of 200 mm was developed. The bending, impact and hanging force tests of the partition slab were carried out, and the bending load-strain (deflection) curve, failure phenomenon, impact and hanging test phenomenon of the partition slab under uniformly distributed load were analyzed. The results show that the bending resistance, impact resistance and hanging performance of the partition slab meet the requirements of relevant specifications. According to the existing concrete bending theory, the calculated bending capacity and deflection of the partition slab are in good agreement with the experimental values. The maximum impact force of the partition slab deduced is far less than its impact bearing capacity, which is consistent with the experimental phenomenon.
邹新兴,王昌远,王安涟,等.陶粒混凝土超长内隔墙条板的受力性能研究[J].混凝土与水泥制品,2022(9):70-76. ZOU X X,WANG C Y,WANG A L,et al.Study on Mechanical Behavior of Ceramsite Concrete Super-long Internal Partition Slabs[J].China Concrete and Cement Products,2022(9):70-76.
超高强复合灌浆料的断裂性能研究
超高强复合灌浆料的断裂性能研究
  • 郦湫翰1,王庆敏1,李政达 1,翁佳奇 2,王振宇1
2022年第9期
摘要
引用本文
摘   要:为了研究超高强复合灌浆料的断裂性能,制作了不同尺寸的缺口三点弯曲梁试件,测试了断裂性能,并对双K断裂模型和尺寸效应模型进行了对比分析。结果表明:超高强复合灌浆料的起裂韧度与失稳韧度较为接近,裂缝稳定扩展的过程较短;根据双K模型计算得出不同尺寸试件的断裂韧度值基本一致,无明显的尺寸效应;根据尺寸效应模型计算得出的断裂韧度和双K模型计算得出的断裂韧度基本一致。 Abstract: In order to study the fracture properties of ultra-high strength composite grouting material, three-point bending beam specimens with different sizes were made, and their fracture properties were tested, and the double-K fracture model and size effect model were compared and analyzed. The results show that the fracture toughness and instability fracture toughness of the ultra-high strength composite grouting material are close, and the process of fracture stable expansion is short. The fracture toughness of different size specimens calculated by double-K model is basically the same, and there is no obvious size effect. The fracture toughness calculated by size effect model is basically the same as that calculated by double-K model.
郦湫翰,王庆敏,李政达,等.超高强复合灌浆料的断裂性能研究[J].混凝土与水泥制品,2022(9):77-81. LI Q H,WANG Q M,LI Z D,et al.Fracture Performance of Ultra-high Strength Composite Grouting Materials[J].China Concrete and Cement Products,2022(9):77-81.

标准解读

GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》主要条文解析
GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》主要条文解析
  • 王春蓉1,钮如嵩1,胡佳星2,奚飞达1,田 寅1,史星祥1,潘从玲1,邓稚川1,夏如茜1
2022年第6期
摘要
引用本文
新制定的国家标准GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》已于 2022年3月1日实施。为便于该标准的使用方准确理解标准条款的具体含义,正确贯彻实施标准条款的具体要求和规定,介绍了该标准的编制背景和意义,并对标准的主要条款及其制定理由进行了解释和说明。 The newly formulated national standard of GB/T 40399—2021 General Technical Conditions for Precast Concrete Part of Prefabricated Construction has been officially implemented in March 1st, 2022. In order to facilitate understanding the specific meaning of the standard terms and correctly implement the specific requirements and provisions of the standard terms by the users, the purpose and significance of the standard are introduced, and the main provisions of the standard and the revision reasons are expained.
王春蓉,钮如嵩,胡佳星,等.GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》主要条文解析[J].混凝土与水泥制品,2022(6):71-76. WANG C R,NIU R S,HU J X,et al.Analysis of Main Clauses in GB/T 40399—2021 General Technical Conditions for Precast Concrete Part of Prefabricated Construction[J].China Concrete and Cement Products,2022(6):71-76.

检测及试验方法研究

港口在役混凝土结构的检测维护框架模型分析
港口在役混凝土结构的检测维护框架模型分析
  • 张灵灵1,王海超1,2,姜佩弦1
2022年第9期
摘要
引用本文
摘   要:基于港口在役混凝土结构的劣化过程和劣化状态建立了耐久性评定等级,从耐久性、经济性和可持续性角度对结构进行了层次化评价,其中,耐久性评估值N1包括结构形式和劣化指标评估值,采用加权平均法得到;经济性评估值N2包括日常检测维护成本、失效状态成本和经济损失成本,采取指标权重法确定;可持续性评估值N3选用指数函数进行计算;耐久性、经济性和可持续性指标的评估因子通过0-1强制评分法确定为1/2、1/3和1/6,经过加权得到了结构的层次化评估值。在层次化评估值的基础上给出了结构的检测维护框架模型,并通过某港口地区的在役混凝土桥梁结构验证了该框架模型的合理性。 Abstract: The durability evaluation grade is established based on the deterioration process and deterioration state of the in-service concrete structure in ports, and the structure is evaluated from the perspectives of durability, economy and sustainability. The durability evaluation value N1 includes the structural form and deterioration index evaluation value, which is obtained by weighted average method. Economic evaluation value N2 includes daily inspection and maintenance cost, failure state cost and economic loss cost, which is determined by index weight method. The sustainability evaluation value N3 is calculated by exponential function. The evaluation factors of durability, economy and sustainability indicators are determined as 1/2, 1/3 and 1/6 by 0-1 compulsory scoring method, and the hierarchical evaluation value of the structure is obtained by weighting. Based on the hierarchical evaluation value, the frame model of structure inspection and maintenance is given, and the rationality of the frame model is verified by the in-service concrete bridge structure in a port area.  
张灵灵,王海超,姜佩弦.港口在役混凝土结构的检测维护框架模型分析[J].混凝土与水泥制品,2022(9):82-87,91. ZHANG L L,WANG H C,JIANG P X.Analysis of Frame Model for Inspection and Maintenance of In-service Concrete Structure in Ports[J].China Concrete and Cement Products,2022(9):82-87,91.

节能降碳

橡胶混凝土力学性能与耐久性能研究进展
橡胶混凝土力学性能与耐久性能研究进展
  • 郑邦容1,唐延丰2,李佳骏2,范灿俊2,张 敏2
2022年第9期
摘要
引用本文
摘   要:介绍了国内外有关橡胶混凝土力学性能与耐久性能的研究进展,得出了掺入橡胶颗粒后混凝土的力学性能降低,而耐久性能改善的结论,提出了橡胶混凝土的未来研究方向。 Abstract: The research progress on the mechanical properties and durability of rubber concrete at home and abroad is introduced, and the conclusion that the mechanical properties of concrete are reduced after adding rubber particles, but the durability is improved is drawn, and the future research direction of rubber concrete is proposed.
郑邦容,唐延丰,李佳骏,等.橡胶混凝土力学性能与耐久性能研究进展[J].混凝土与水泥制品,2022(9):88-91. ZHENG B R,TANG Y F,LI J J,et al.Research Progress on Mechanical Properties and Durability of Rubber Concrete[J].China Concrete and Cement Products,2022(9):88-91.
混合再生细骨料水泥砂浆性能试验研究
混合再生细骨料水泥砂浆性能试验研究
  • 马加存1,杨永富2,段淑芸1,张晓萌2,迟朝明3,葛 智4,庄培芝4
2022年第9期
摘要
引用本文
摘   要:研究了废弃混凝土和废弃黏土砖制成的混合再生细骨料的掺量(0、30%、60%、100%)和预湿时长(0、1/6 h、24 h)对砂浆流动性、抗压强度、抗折强度和干燥收缩性能的影响。结果表明:砂浆的初始流动度和流动度经时损失率随着再生细骨料掺量和预湿时长的增加而降低;随着再生细骨料掺量的增加,砂浆的抗压强度降低,抗折强度变化较小;砂浆的抗压、抗折强度随着再生细骨料预湿时长的增加呈增大趋势;由于再生细骨料的内养护作用,砂浆的干燥收缩量随再生细骨料掺量和预湿时长的增加呈减小趋势。 Abstract: The effects of the content (0, 30%, 60%, 100%) and pre-wetting time (0, 1/6 h, 24 h) of mixed recycled fine aggregate made from waste concrete and waste clay bricks on the fluidity, compressive strength, flexural strength and drying shrinkage properties of mortar were studied. The results show that the initial fluidity and fluidity loss rate of mortar decrease with the increase of recycled fine aggregate content and pre-wetting time. With the increase of recycled fine aggregate content, the compressive strength of mortar decreases, and the change of flexural strength is small. The compressive and flexural strengths of mortar tend to increase with the increase of pre-wetting time of recycled fine aggregate. Due to the internal curing effect of recycled fine aggregate, the drying shrinkage of mortar decreases with the increase of recycled fine aggregate content and pre-wetting time.
马加存,杨永富,段淑芸,等.混合再生细骨料水泥砂浆性能试验研究[J].混凝土与水泥制品,2022(9):92-94,105. MA J C,YANG Y F,DUAN S Y,et al.Experimental Study on the Properties of Mixed Recycled Fine Aggregate Mortar[J].China Concrete and Cement Products,2022(9):92-94,105.
碱激发矿粉-粉煤灰混凝土耐久性能试验研究
碱激发矿粉-粉煤灰混凝土耐久性能试验研究
  • 任 君1,王允波2,徐伟伟2,张思雨2,王玉璞2,王 腾2
2022年第9期
摘要
引用本文
摘   要:研究了激发剂模数、养护方式和粉煤灰掺量对机制砂碱激发混凝土(MAAC)耐久性能的影响。结果表明:与20 ℃标养相比,60 ℃蒸养MAAC的收缩率降低明显,耐久性能增强;掺入20%粉煤灰后,MAAC的收缩性能有所改善,抗硫酸盐侵蚀性能有所减弱,但在蒸养条件下,掺入20%粉煤灰可以在一定程度上提高MAAC的抗氯离子侵蚀能力;随着碱激发剂模数由2.0降至1.8,MAAC的耐久性能有所增强。 Abstract: The effects of activator modulus, curing method and fly ash content on the durability of manufactured sand alkali-activated concrete(MAAC) were studied. The results show that compared with the standard curing at 20 ℃, the shrinkage rate of MAAC in steam curing at 60 ℃ is significantly reduced, and the durability is enhanced. After adding 20% fly ash, the shrinkage performance of MAAC is improved, the resistance to sulfate corrosion is weakened, but under steam curing conditions, adding 20% fly ash can improve the chloride ion corrosion resistance of MAAC to a certain extent. The durability of MAAC is enhanced with the decrease of alkali activator modulus from 2.0 to 1.8.
任君,王允波,徐伟伟,等.碱激发矿粉-粉煤灰混凝土耐久性能试验研究[J].混凝土与水泥制品,2022(9):95-98. REN J,WANG Y B,XU W W,et al.Experimental Study on Durability of Alkali-activated Mineral Powder and Fly Ash Concrete[J].China Concrete and Cement Products,2022(9):95-98.
建筑垃圾再生骨料改性技术研究进展
建筑垃圾再生骨料改性技术研究进展
  • 王亚松1,覃铃玲1,李 松2,谢 颉3,段 平1
2022年第9期
摘要
引用本文
摘   要:合理使用再生骨料有助于节约资源和改善环境,但再生骨料存在形状不规则、吸水率高、压碎指标大等问题,直接用到混凝土中会劣化混凝土的性能。对再生骨料进行改性可在一定程度上减小其与天然骨料之间的差距,从而减轻其对混凝土性能的不利影响。通过物理强化技术、化学强化技术和微生物矿化技术改性再生骨料的作用机理和改性效果介绍,为再生骨料在混凝土中的合理应用提供借鉴。 Abstract: The rational use of recycled aggregates can help save resources and improve the environment. However, recycled aggregates have problems such as irregular shape, high water absorption, and large crushing index. Direct use of recycled aggregates in concrete will deteriorate the performance of concrete. The modification of recycled aggregates can reduce the gap between recycled aggregates and natural aggregates to some extent, so as to reduce its adverse impact on the performance of concrete. The action mechanism and modification effect of modified recycled aggregates by physical strengthening technology, chemical strengthening technology and microbial mineralization technology are introduced, which can provide a reference for rational application of recycled aggregates in concrete.
王亚松,覃铃玲,李松,等.建筑垃圾再生骨料改性技术研究进展[J].混凝土与水泥制品,2022(9):99-105. WANG Y S,QIN L L,LI S,et al.Research Progress on Modification Technology of Construction Waste Recycled Aggregates[J].China Concrete and Cement Products,2022(9):99-105.

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珊瑚碎屑混凝土的强度特性及破坏形态分析
珊瑚碎屑混凝土的强度特性及破坏形态分析
  • 王 磊1,2,范 蕾1,2
2015年第1期
摘要
引用本文
摘   要:针对目前对珊瑚碎屑混凝土的力学机理尚不清晰这一问题,对不同龄期和水灰比的珊瑚混凝土试块进行了试验研究。试验结果表明,珊瑚混凝土具有早强、快硬的特点;同时,当水灰比减小到一定程度后,单纯减小水灰比并不能明显提高珊瑚混凝土的抗压强度。本文从材料特性、界面特性以及龄期和水灰比等方面着手,对珊瑚混凝土的强度特性作了详细分析,并介绍了珊瑚混凝土的破坏形态,从而可为珊瑚碎屑应用于海岛混凝土工程提供一定的参考依据。 Abstract: Currently, the mechanical mechanism of coral debris concrete is not well understood, so the research on coral concrete test block in different age and water cement ratio is carried out. The test results show that coral concrete has the characteristics of fast strengthening and hardening, and when the water cement ratio decreases to a certain extent, simply reducing the water cement ratio could not result in obvious additions of compressive strength of coral concrete. From the aspects of material properties, interface properties,age and water cement ratio, the strength characteristics of the coral concrete are analyzed in detail, and the failure pattern is introduced, which can provide reference for application of coral debris in island concrete engineering.
王磊,范蕾. 珊瑚碎屑混凝土的强度特性及破坏形态分析[J].混凝土与水泥制品,2015(1):1-4. WANG L,FAN L.Strength Characteristic and Failure Pattern Analysis on Coral Debris Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(1):1-4.
装配式结构用高强套筒灌浆料性能试验研究
装配式结构用高强套筒灌浆料性能试验研究
  • 汪秀石,杨智良,吴照学
2015年第2期
摘要
引用本文
摘   要:研究了装配式结构用高强套筒灌浆料的性能,通过试配并进行了流动度、强度和膨胀性试验,优选出了优化配合比。同时基于优化配合比进行了水胶比、减水剂掺量和膨胀剂掺量对高强套筒灌浆料性能影响的研究。试验结果表明,随着水胶比(W/B)增加,流动度逐渐增大,但强度随W/B增加呈现明显降低趋势;减水剂可有效改善流动度,而当掺量过多时对强度有一定的影响;膨胀率随膨胀剂掺量增加呈现增长趋势,但当掺量小于8.0%时,膨胀效果较差,掺量大于12.0%时,对流动度和强度产生不利影响。 Abstract: The properties of high-strong cementitious grout for prefabricated concrete structure are studied, and the optimum mix proportion is elected by the tests of fluidity, strength and expansibility. The roles of W/B and the content of superplasticizer or expanders in high-strong cementitious grout for coupler are researched respectively based on the optimum mix proportion. The test results show that the fluidity of the grout increases with the increasing of W/B, but its strength has significantly decreasing trend; the fluidity of the grout can be improved effectively by superplasticizer, but its strength will decrease if superplasticizer content is excessive; expansion rate of the grout increases with the increasing of expanders agent content, but the expansibility is poor when the content is less than 8.0%, and it has an adversely affect on the liquidity and strength of the grout when the content is greater than 12.0%.
汪秀石,杨智良,吴照学.装配式结构用高强套筒灌浆料性能试验研究[J].混凝土与水泥制品,,2015(2):65-68. WANG X S,YANG Z L,WU Z X.Experimental Research on Performance of High-strong Cementitious Grouting for Prefabricated Concrete Structure[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(2):65-68.
再生粗骨料强化处理工艺对再生混凝土性能的影响
再生粗骨料强化处理工艺对再生混凝土性能的影响
  • 郭远新,李秋义,孔 哲,岳公冰,韩 帅
2015年第6期
摘要
引用本文
摘   要:分别采用物理强化、化学强化和物理-化学复合强化三种不同的强化方式对简单破碎再生粗骨料进行强化处理,并采用100%取代天然碎石制备再生粗骨料混凝土,研究了不同强化处理后的再生粗骨料对混凝土工作性能、力学性能、抗渗透性能和抗碳化性能的影响。结果表明,经过强化处理的再生粗骨料混凝土的各项性能均有不同程度的提高,其中经二次物理强化处理后的再生粗骨料混凝土的用水量较天然碎石混凝土仅增加了6kg/m3,其抗压强度也达到最高值,接近于天然碎石混凝土;经二次物理强化和化学浸渍复合强化处理后的再生混凝土氯离子扩散系数降低了13.6%;三种不同的强化方式处理后,再生混凝土的碳化深度和碳化速度均有所降低。 Abstract: Three kinds of different strengthening technologies of physical enhancement, chemical enhancement and physical-chemical compound enhancement to strengthen the simple crushing recycled coarse aggregate are adopted, with 100% replaced natural gravel preparation of recycled coarse aggregate concrete, and the influences of the recycled coarse aggregate of different strengthening treatment on the working performance, mechanical properties, penetration resistance and carbonation resistance of concrete are studied. The research results show that, through strengthening treatment, recycled coarse aggregate concrete properties are improved to different degrees, the water consumption of recycled coarse aggregate concrete after the secondary physical strengthen treatment is only increased by 6kg/m3 than that of natural gravel concrete. The compressive strength also reached the highest value, close to the natural gravel concrete. The chloride ion diffusion coefficient of recycled concrete after the secondary physical-chemical compound strengthening treatment is reduced by 13.6%. The depth of carbonation and carbonation velocity decrease after three kinds of different strengthening treatments.
郭远新,李秋义,孔哲,等.再生粗骨料强化处理工艺对再生混凝土性能的影响[J].混凝土与水泥制品,2015(6):11-17. GUO Y X,LI Q Y,KONG Z,et al.Influence of Strengthening Treatment Technology of Recycled Coarse Aggregate on Performance of Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(6):11-17.
无砂再生透水混凝土配合比设计
无砂再生透水混凝土配合比设计
  • 张松涛1,贾欣悦2,宋 卓1,贾艳东1
2016年第12期
摘要
引用本文
张松涛,贾欣悦,宋卓,等.无砂再生透水混凝土配合比设计[J].混凝土与水泥制品,2016(12):6-12. ZHANG S T,JIA X Y,SONG Z,et al.Design on Mix Proportion of No-fines Pervious Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(12):6-12.
清水混凝土概念、研究现状、存在问题及配合比设计方 综述
清水混凝土概念、研究现状、存在问题及配合比设计方 综述
  • 郭 伟1,路林海2,王龙志3,崔 鑫3,王桂玲4,张海霞3
2016年第10期
摘要
引用本文
摘   要:20世纪90年代后期以来,清水混凝土研究及工程应用得到了长足发展,许多城市建成了清水混凝土标志性工程。为了更好地促进清水混凝土研究的深入、工程质量的提高,对清水混凝土的概念、研究现状、存在问题及现有的清水混凝土配合比设计方法进行了系统地梳理、总结。通过对清水混凝土现状的研究,可使相关领域技术人员认识到清水混凝土发展中存在的不足、明确清水混凝土的研究方向,以实现清水混凝土技术研究水平的再提高,有力地支持清水混凝土工程应用的进一步推广。 Abstract: Since the late 1990s, research and application of fair-faced concrete has made considerable progress, many cities built landmark projects of fair-faced concrete. In order to better promote the study in-depth and the engineering quality improvement of fair-faced concrete, the concept, research status, existing problems and mixture design methods of fair-faced concrete are systematically reviewed and summarized. Through the above study of fair-faced concrete, the relevant technicians recognize the lack of fair-faced concrete in the development and realize a clear research direction, in order to improve research level, strongly support further promotion of fair-faced concrete in engineering applications.
郭伟,路林海,王龙志,等.清水混凝土概念、研究现状、存在问题及配合比设计方法综述[J].混凝土与水泥制品,2016(10):23-27. GUO W,LU L H,WANG L Z,et al.Summary for Concept, Research Status, Existing Problems and Mix Proportion Design of Fair-faced Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(10):23-27.
新型装配式建筑构件生产及其施工技术的研究与应用
新型装配式建筑构件生产及其施工技术的研究与应用
  • 范 玉1,4,徐 华2,黄 新3,黄继战4,马北京4
2015年第12期
摘要
引用本文
摘   要:通过对建筑PC构件的设计、生产、施工进行的研究,对建筑PC构件进行了再设计及优化,确定了合理的PC构件生产及其施工工艺方案,并对影响PC构件质量的相关因素进行了分析。 Abstract: Through the research on design of PC component, production and construction,  construction PC component is carried out for re-design and optimization. The reasonable PC component production and construction technology program are determined, and factors affecting the quality of PC are analyzed.
范玉,徐华,黄新,等.新型装配式建筑构件生产及其施工技术的研究与应用[J].混凝土与水泥制品,2015(12):87-89. FAN Y, XU H,HUANG X,et al.Research and Application of Production for New Type of Prefabricated Construction Component and Its Construction Technology[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):87-89.
石墨烯纳米片对水泥基复合材料力学性能的影响
石墨烯纳米片对水泥基复合材料力学性能的影响
  • 王 辉,刘爱红,李 航
2015年第12期
摘要
引用本文
摘   要:采用球磨法将石墨烯纳米片分散在水泥基体中,研究了石墨烯纳米片掺量对水泥基材料抗折强度和抗压强度的影响。实验结果表明,适量的石墨烯纳米片可均匀分散在水泥基体中,通过桥联效应和拔出效应对水泥基材料起增强增韧作用,当石墨烯纳米片掺量为0.04%时,石墨烯纳米片与水泥基体界面结合良好,没有明显过渡层,试件3d抗折强度和抗压强度分别提高了22.84%和23.61%。 Abstract: Graphene nanoplatelets (GNPs) were dispersed in the cement matrix by milling method. The effect of GNPs with different contents on the flexural strength and compressive strength of composites were studied. The results showed that well dispersed GNPs improved the mechanical properties of cement composites, owing to GNPs excellent pulling-out and bridging capability. When the GNPs content was 0.04%, the mechanical properties of cement composites were increased obviously. Its flexural and compressive strength increased by 22.84% and 23.61% respectively compared with the referee sample after curing 3 days. The interface between graphene nanoplatelets and cement was bonded well, with no obvious transition layer.
王辉,刘爱红,李航.石墨烯纳米片对水泥基复合材料力学性能的影响[J].混凝土与水泥制品,2015(12):25-27. WANG H,LIU A H,LI H.Influence of Graphene Nanoplatelets on Mechanical Properties of Cement-based Composites[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):25-27.
大型智能PC构件自动化生产线简介
大型智能PC构件自动化生产线简介
  • 孙 红1,孙 健1,吴玉厚1,赵凯军2
2015年第3期
摘要
引用本文
摘   要:根据混凝土工厂化生产的需要,阐述了大型智能PC构件生产线的组成部分、工艺过程和技术重点;分析了该生产线中蕴含的微观物流、信息采集、分布式控制及多智能体的协同过程,总结了PC构件生产线的优点和技术创新突破点,可为大型智能PC构件全自动生产线的研制提供理论基础和技术依据。 Abstract: According to the needs of the concrete factory production, the large scale intelligent automatic PC production line the technological process and technical keys of PC component are introduced, the cooperative process of microscopic logistics, information acquisition, distributed control and multi-agent systems are analyzed, the advantages and technology innovation of PC components production line are summarized, which can provide theoretical basis and technical basis for large scale intelligent automatic production line of PC components.
孙红,孙健,吴玉厚,等.大型智能PC构件自动化生产线简介[J].混凝土与水泥制品,2015(3):45-48. SUN H,SUN J,WU Y H,et al.Introduction of Large Scale Intelligent PC Automatic Production Line[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(3):45-48.
建筑垃圾再生微粉的研究现状
建筑垃圾再生微粉的研究现状
  • 毛新奇1,2,屈文俊1,朱 鹏1
2015年第8期
摘要
引用本文
摘   要:建筑垃圾再生微粉各项性能的研究是推进建筑垃圾资源化的重要基础。根据近年来国内关于再生微粉的主要研究成果,对材料来源、制备工艺、工作性能、力学性能和耐久性能等方面进行了综述,并对相关的影响因素进行了探讨分析。 Abstract: Research on the properties of utilization regeneration of powder for construction waste is the important foundation of resource utilization of construction waste. Based on the recent domestic research on recycled powder, material source, manufacturing process, workability, mechanical properties and the durability are reviewed. Besides, the related influence factors are discussed and analyzed.
毛新奇,屈文俊,朱鹏.建筑垃圾再生微粉的研究现状[J].混凝土与水泥制品,2015(8):89-93. MAO X Q,QU W J,ZHU P.Study Status of Recycled Powder for Construction Waste[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(8):89-93.
再生粗骨料及再生混凝土性能研究进展
再生粗骨料及再生混凝土性能研究进展
  • 甘 福1,周脉席1,3,濮 琦2
2018年第9期
摘要
引用本文
摘   要:结合国内外再生粗骨料混凝土的研究现状,综述了再生粗骨料性能、再生粗骨料混凝土性能、再生混凝土改性方法及改性后的混凝土性能等方面内容,展望了再生粗骨料及再生混凝土未来研究方向。 Abstract: Combining the study of recycled coarse aggregate concrete at home and abroad, the property of recycled coarse aggregate, the performance of recycled coarse aggregate concrete, the modified method of recycled concrete and the performance of modified concrete are reviewed, and the fature research direction on recycled coarse aggregate and recycled concrete is prospected.
甘福,周脉席,濮琦.再生粗骨料及再生混凝土性能研究进展[J].混凝土与水泥制品,2018(9):102-107. GAN F,ZHOU M X,PU Q.Research Progress of Performance of Recycled Coarse Aggregate and Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2018(9):102-107.
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